Overhead mobile charger system for reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces

ABSTRACT

An overhead mobile charger system for reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces. The system includes a rail, a pair of trolleys, a single EV battery charger, and apparatus for electrically connecting the EV battery charger to a power source without impinging upon movement of the pair of trolleys along the rail. The rail mounts overhead of, and traverses, the pair of adjacent rows of side-by-side parking spaces. The pair of trolleys are movably mounted along the rail and reach the electric vehicles parked in the pair of adjacent rows of side-by-side parking spaces. The single EV battery charger is mounted to, and moves with, the pair of trolleys to charge the electric vehicles parked in the pair of adjacent rows of side-by-side parking spaces.

1. CROSS REFERENCE TO RELATED APPLICATIONS

The instant non-provisional patent application claims priority from provisional patent application No. 61/399,490, filed on Jul. 13, 2010, for a CONTROL SYSTEM FOR ELECTRIC VEHICLE CHARGING SYSTEMS, and incorporated herein by reference thereto.

2. BACKGROUND OF THE INVENTION

A. Field of the Invention

The embodiments of the present invention relate to an electric vehicle charging system, and more particularly, the embodiments of the present invention relate to an overhead mobile charger system for reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces.

B. Description of the Prior Art

The electric vehicle (“EV”) charging industry is coming of age. Currently, EV chargers can only service one parking spot at a time.

Referring now to FIG. 1, which is a diagrammatic perspective view of a typical prior art EV charging station design, the typical prior art EV charging station design a is for parking garage application, has an overhead charging unit b, and is produced by Control Module Industries.¹ The typical prior art EV charging station design a is typical of today's commercially available overhead systems, is mounted to a ceiling c, and has a retractable cable d. ¹Control Module Industries, 89 Phoenix Ave, Enfield, Conn. 06082, (860) 745-2433, (800) 722-6654.

As EV market penetration increases so will the number of parking garage customers driving EVs. Garages having valet parking will have to be continuously moving EVs in order to service them from a single charger. In order to successfully charge multiple EVs with a single charger, a parking garage attendant will need to orchestrate the process. This person will be responsible for moving the first EV to be charged into the EVSE parking spot, connecting the EV charger to the EV, and activating the charger. Once charging is complete, the attendant will disconnect the EV charger from the EV, move the first EV to a different parking spot, move the second EV to be charged into the EVSE parking spot, and begin the process again.

There is only one alternative to this scenario currently available. Purchasing and installing additional EV chargers will allow the attendant to move an EV into one of several locations, thus minimizing operational complexity and time. Therefore, the bottleneck for an attendant to shuffle multiple EVs through a single charger could be significantly reduced and operational efficiencies gained. The cost of additional chargers and accompanying infrastructure costs, however, may not be economically feasible. Many of these chargers are likely to be level 3 chargers that are capable of charging an EV in a few minutes vs. an hour or more. Most level 3 chargers require a 60 amp 440 volt service or greater. Having multiple level 3 chargers will place significant stress on the facility electrical service. In addition to the cost of multiple chargers ($40-50 k each), the costs of running multiple conduits and wiring runs from the electrical panel box to chargers can add significant cost to installations. Furthermore, if the service to the panel and/or the panel box require(s) greater electrical capacity, the cost increases dramatically. Thus, there exists a need to have mobile charging stations that enable an operator to move efficiently from EV to EV so as to enable the charging infrastructure to be optimally used hence reducing the number of EV chargers and infrastructure required to support the EV throughput.

Numerous innovations for electric charging devices have been provided in the prior art, which will be described below in chronological order to show advancement in the art, and which are incorporated herein by reference thereto. Even though these innovations may be suitable for the specific individual purposes to which they address, nevertheless, they differ from the embodiments of the present invention in that they do not teach an overhead mobile charger system for reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces.

(1) U.S. Pat. No. 5,323,099 to Bruni et al.

U.S. Pat. No. 5,323,099—issued to Bruni et al. on Jun. 21, 1994 in U.S. class 320 and subclass 108—teaches a curb-side battery charging system that provides a mechanism for transferring electrical power to an electric vehicle to recharge its battery. The battery charging system includes a housing that is disposed on a wall, or is slidably attached to a track mounted to a ceiling, for example. A retractable charging device is coupled to a power supply, and mates with a receptacle device disposed in the vehicle. A variety of charging devices can be employed in the battery charging system. Electronic circuitry controls power supplied to the vehicle from the power supply of the charging system. In addition, an interface circuit allows a user to enter a code to use the system, and which provides an identification for billing purposes, or a credit card type key that activates the system and performs the same functions. A fan is provided for cooling purposes that causes an air flow through the system. The battery charging system allows an electric vehicle to be charged without any type of conventional electrical plug. The battery charging system provides a mechanism for coupling power from a power source to an electric vehicle to recharge its battery.

(2) U.S. Pat. No. 5,548,200 to Nor et al.

U.S. Pat. No. 5,548,200—issued to Nor et al. on Aug. 20, 1996 in U.S. class 320 and subclass 109—teaches a method and apparatus for charging the battery of an electric vehicle. When the electric vehicle is connected to a charging station, it is interrogated to determine the nature of the charge controller that is onboard the vehicle. Logic decisions invoking the particular mode for charging the vehicle are made depending on the nature and type of charge controller that is onboard the vehicle. Thus, delivery of charging energy to the battery in the vehicle may be entirely under the control of a charge controller onboard the vehicle, or if the control module in the vehicle is less sophisticated, then delivery of charging energy will be under the control of a charging module within the charging station. Parameters of initial charging current and voltage are therefore set either by the onboard battery charging controller or the charge controller in the charging station. Alternatively, these parameters may be set manually or by insertion of a card into a data interface to establish initial charging conditions. Under controlled conditions, a plurality of vehicles may be charged at a single establishment having a plurality of charging stations, either sequentially or simultaneously, depending on the criteria to be established. The charging station may be privately owned so as to charge a fleet of vehicles, or there may be a plurality of charging stations at a publicly accessible service station.

(3) U.S. Pat. No. 5,780,991 to Brake et al.

U.S. Pat. No. 5,780,991—issued to Brake et al. on Jul. 14, 1998 in U.S. class 320 and subclass 112—teaches a charging apparatus with multiple charge stations. The apparatus includes a single power supply that operates under the control of a microprocessor to charge a plurality of battery packs disposed in respective charging stations. Associated with each charging station is a wiring harness assembly that includes an EEPROM memory chip having one or more stored charging algorithms for the type or types of battery packs to be charged at that charging station. The microprocessor reads the charging algorithm from a charging station's memory chip when a battery pack is inserted in the charging station. The microprocessor utilizes a feedback control loop including a resistor network to regulate the charging current and charging voltage supplied to each battery pack being charged. If a plurality of Li-Ion battery packs are disposed in respective charging stations, each pack is sequentially charged so that the voltage across the pack is raised to the rated output voltage of the pack. Then, all of the Li-Ion battery packs are charged in parallel until each is fully charged. The parallel charging reduces total charging time.

(4) U.S. Pat. No. 5,803,215 to Henze et al.

U.S. Pat. No. 5,803,215—issued to Henze et al. on Sep. 8, 1998 in U.S. class 191 and subclass 2—teaches a method and apparatus for charging batteries of a plurality of vehicles, which includes a power source converter connectable to a power source to receive electrical power, and for converting the electrical power to a selected voltage potential that is distributed on a distribution bus. A plurality of vehicle connecting stations are connected to the distribution bus. Each vehicle connecting station includes a station power converter for receiving electrical power from the power source converter for charging the battery, and a station controller to control electrical power flow to the vehicle battery.

(5) U.S. Pat. No. 5,847,537 to Parmley, Sr.

U.S. Pat. No. 5,847,537—issued to Parmley, Sr. on Dec. 8, 1998 in U.S. class 320 and subclass 109—teaches a charging station system of electric vehicles, which includes a building containing charging equipment, and may provide other auxiliary services. The system includes a T-bar extending from the building to provide charging stalls or locations spaced along the T-bar. The building is modular, and incorporates a standard ISO type configuration.

(6) U.S. Pat. No. 6,081,205 to Williams.

U.S. Pat. No. 6,081,205—issued to Williams on Jun. 27, 2000 in U.S. class 340 and subclass 932.2—teaches an electric vehicle recharging parking meter that includes a parking meter, a processor, a display interconnected to the processor for giving visual information to a user, and an input device interconnected to the processor. The input device enables the user to select the parking time and/or the recharging time for the electric vehicle. The processor is responsive to the user selection of recharge time, parking time, and recharge power requirements entered on the input device. A payment receptor for receiving payment for the parking and recharge time selected by the user is interconnected to the processor for indicating receipt of payment for parking time and recharge electricity. The processor enables a switch to close so that power is supplied to the vehicle from a power source. A connector is attached to a post or stand on which the meter is mounted, whereby the electric vehicle is interconnected to the power source. A power controller, operable in response to signals from the processor, is interconnected between the power source and the connector.

(7) U.S. Pat. No. 6,338,450 to Schwendinger.

U.S. Pat. No. 6,338,450—issued to Schwendinger on Jan. 15, 2002 in U.S. class 242 and subclass 388.9—teaches a cable manager having a support member and a bracket that mounts the support member to a ceiling joist of a golf cart shed. A first pulley wheel attaches to the top end of the support member, and a second pulley wheel attaches to a pulley mounting bracket. A coil spring entrained about the first pulley wheel has one end attached to the pulley mounting bracket and the other end attached to the bottom end of the support member. The second pulley wheel is suspended at a lower elevation than the first pulley wheel, and moves down against the force of the spring when the power cable entrained over it is pulled down to connect to a golf cart for recharging. While recharging occurs, the lower pulley is fixed to the support member by attaching its bracket to an S-hook that attaches the spring to the vertical support member. When the power cable is released, the pulley moves up, but its upward travel is limited by a cable bracket that captures the power cable and holds it in position for easy retrieval for the next use. The cable manager is suspended from the ceiling, above the tops of the golf carts, leaving the area floor free of obstructions for the golf cart.

(8) United States Patent Application Publication Number 2008/0218121 to Gale et

United States Patent Application Publication Number 2008/0218121—published to Gale et al. on Sep. 11, 2008 in U.S. class 320 and subclass 109—teaches a method for charging an electric storage battery in a plug-in hybrid electric vehicle through a power supply circuit, which includes coupling the charger to the circuit, determining whether another appliance in the circuit other than the charger is drawing current, determining a maximum charge rate at which the battery can be charged using the charger, charging the battery at the maximum charge rate if no other appliance in the circuit is drawing current, and charging the battery at less than the maximum charge rate if another appliance in the circuit is drawing current.

It is apparent that numerous innovations for electric charging devices have been provided in the prior art, which are adapted to be used. Furthermore, even though these innovations may be suitable for the specific individual purposes to which they address, nevertheless, they would not be suitable for the purposes of the present invention as heretofore described, namely, an overhead mobile charger system for reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces.

3. SUMMARY OF THE INVENTION

Thus, an object of the embodiments of the present invention is to provide an overhead mobile charger system for reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces, which avoids the disadvantages of the prior art.

Briefly stated, another object of the embodiments of the present invention is to provide an overhead mobile charger system for reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces. The system includes a rail, a pair of trolleys, a single EV battery charger, and apparatus for electrically connecting the single EV battery charger to a power source without impinging upon movement of the pair of trolleys along the rail. The rail mounts overhead of, and traverses, the pair of adjacent rows of side-by-side parking spaces. The pair of trolleys are movably mounted along the rail and reach the electric vehicles parked in the pair of adjacent rows of side-by-side parking spaces. The single EV battery charger is mounted to, and moves with, the pair of trolleys to charge the electric vehicles parked in the pair of adjacent rows of side-by-side parking spaces.

The novel features considered characteristic of the embodiments of the present invention are set forth in the appended claims. The embodiments of the present invention themselves, however, both as to their construction and to their method of operation together with additional objects and advantages thereof will be best understood from the following description of the specific embodiments when read and understood in connection with the accompanying figures of the drawing.

4. BRIEF DESCRIPTION OF THE FIGURES OF THE DRAWING

The figures of the drawing are briefly described as follows:

FIG. 1 is a diagrammatic perspective view of a typical prior art EV charging station design;

FIG. 2 is a diagrammatic top plan view of the overhead mobile charger system of the embodiments of the present invention reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces;

FIG. 3 is an enlarged diagrammatic side elevational view taken generally in the direction of ARROW 3 in FIG. 2 of the overhead mobile charger system of the embodiments of the present invention;

FIG. 4 is an enlarged diagrammatic perspective view taken generally in the direction of ARROW 4 in FIG. 2 of the overhead mobile charger system of the embodiments of the present invention utilizing a collector shoe;

FIG. 5 is an enlarged diagrammatic perspective view taken generally in the direction of ARROW 5 in FIG. 2 of the overhead mobile charger system of the embodiments of the present invention utilizing a festoon; and

FIG. 6 is an enlarged diagrammatic perspective view of the area generally enclosed by the dotted curve identified by ARROW 6 in FIG. 3 of an EV charger handle.

5. LIST OF REFERENCE NUMERALS UTILIZED IN THE FIGURES OF THE DRAWING A. Prior art.

-   a typical prior art EV charging station design for parking garage     application -   b overhead charging unit -   c ceiling -   d retractable cable

B. General.

-   10 overhead mobile charger system of embodiments of present     invention for reaching and charging electric vehicles 12 parked in     pair of adjacent rows of side-by-side parking spaces 14 -   12 electric vehicles -   14 pair of adjacent rows of side-by-side parking spaces 14     C. Overall configuration of overhead mobile charger system 10. -   16 rail for mounting overhead of, and for traversing, pair of     adjacent rows of side-by-side parking spaces 14. -   18 pair of trolleys for reaching electric vehicles 12 parked in pair     of adjacent rows of side-by-side parking spaces 14 -   20 single EV battery charger for charging electric vehicles 12     parked in pair of adjacent rows of side-by-side parking spaces 14 -   22 apparatus for electrically connecting single EV battery charger     20 to power source 24 without impinging upon movement of pair of     trolleys 18 along rail 16 -   24 power source     D. Specific configuration of rail 16. -   26 ceiling mounts for mounting rail 16 to ceiling 28, overhead pair     of adjacent rows of side-by-side parking spaces 14 -   28 ceiling -   30 trolley stops -   32 web of rail 16 -   34 pair of flanges of rail 16     E. Specific configuration of each trolley of the pair of trolleys     18. -   36 generally U-shaped body of each trolley of pair of trolleys 18 -   38 two sets of wheels of each trolley of pair of trolleys 18 -   40 axles of two sets of wheels 38 of each trolley of pair of     trolleys 18 -   42 bearings of two sets of wheels 38 of each trolley of pair of     trolleys 18 -   44 mounting plate of pair of trolleys 18 -   45 electric motor of one of pair of trolleys 18 for electrically     connecting to power source 24 so as to cause two sets of wheels 38     of one trolley of pair of trolleys 18 to rotate and thereby allow     pair of trolleys 18 to traverse rail 16 in either direction so as to     be able to reach electric vehicles 12 parked in pair of adjacent     rows of side-by-side parking spaces 14     F. Specific configuration of single EV battery charger 20. -   46 housing of single EV battery charger 20 -   48 retractable charger cable of single EV battery charger 20 -   50 EV charger handle of single EV battery charger 20 for releasably     and electrically connecting to electric vehicles 12 parked in pair     of adjacent rows of side-by-side parking spaces 14     G. Specific configuration of collector shoe embodiment of apparatus     22. -   52 plurality of conductors of apparatus 22 for electrically     connecting to power source 24 so as to allow plurality of conductors     52 of apparatus 22 to be electrically hot and carry power from power     source 24 -   54 insulated suspenders of apparatus 22 -   56 plurality of collector shoes of apparatus 22 -   58 power cable of apparatus 22     H. Specific configuration of festoon embodiment of apparatus 22. -   60 unistrut of apparatus 22 -   62 rigid suspenders of apparatus 22 -   64 plurality of rolling reels of apparatus 22 -   66 power cable of apparatus 22 -   68 one end of power cable 66 of apparatus 22 -   70 other end of power cable 66 of apparatus 22 for electrically     connecting to power source 24     I. Specific configuration of EV charger handle 50 of single EV     battery charger 20. -   72 hand-fitting enclosure of EV charger handle 50 of single EV     battery charger 20 -   74 free distal end of hand-fitting enclosure 72 of EV charger handle     50 of single EV battery charger 20 for releasably engaging in     electric vehicles 12 parked in pair of adjacent rows of side-by-side     parking spaces 14 -   76 proximal end of hand-fitting enclosure 72 of EV charger handle 50     of single EV battery charger 20 -   78 pair of pushbuttons of EV charger handle 50 of single EV battery     charger 20

6. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A. General.

Referring now to the figures, in which like numerals indicate like parts, and particularly to FIG. 2, which is a diagrammatic top plan view of the overhead mobile charger system of the embodiments of the present invention reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces, the overhead mobile charger system of the embodiments of the present invention is shown generally at 10 for reaching and charging electric vehicles 12 parked in a pair of adjacent rows of side-by-side parking spaces 14.

B. Overall Configuration of the Overhead Mobile Charger System 10.

The overall configuration of the overhead mobile charger system 10 can best be seen in FIGS. 3-5, which are, respectively, an enlarged diagrammatic side elevational view taken generally in the direction of ARROW 3 in FIG. 2 of the overhead mobile charger system of the embodiments of the present invention, an enlarged diagrammatic perspective view taken generally in the direction of ARROW 4 in FIG. 2 of the overhead mobile charger system of the embodiments of the present invention utilizing a collector shoe, and an enlarged diagrammatic perspective view taken generally in the direction of ARROW 5 in FIG. 2 of the overhead mobile charger system of the embodiments of the present invention utilizing a festoon, and as such, will be discussed with reference thereto.

The overhead mobile charger system 10 comprises a rail 16, a pair of trolleys 18, a single EV battery charger 20, and apparatus 22 for electrically connecting the single EV battery charger 20 to a power source 24 without impinging upon movement of the pair of trolleys 18 along the rail 16.

The rail 16 is for mounting overhead of, and for traversing, the pair of adjacent rows of side-by-side parking spaces 14 (FIG. 1). The pair of trolleys 18 are movably mounted along the rail 16 for reaching the electric vehicles 12 parked in the pair of adjacent rows of side-by-side parking spaces 14 (FIG. 1). The single EV battery charger 20 is mounted to, and moves with, the pair of trolleys 18 for charging the electric vehicles 12 parked in the pair of adjacent rows of side-by-side parking spaces 14 (FIG. 1).

C. Specific Configuration of the Rail 16.

Ceiling mounts 26 are for mounting the rail 16 to a ceiling 28, overhead the pair of adjacent rows of side-by-side parking spaces 14 (FIG. 1).

Trolley stops 30 are mounted to the rail 16 and are for limiting traversing of the pair of trolleys 18 on the rail 16 to the pair of adjacent rows of side-by-side parking spaces 14 (FIG. 1).

The rail 16 is, preferably, an I-beam, and as such, further has a web 32 and a pair of flanges 34.

D. Specific Configuration of Each Trolley 18.

Each trolley 18 comprises a generally U-shaped body 36. The generally U-shaped body 36 of each trolley 18 depends from around a lowermost flange 34 of the rail 16.

Each trolley 18 further comprises two sets of wheels 38. The two sets of wheels 38 of each trolley 18 are rotatably mounted to the generally U-shaped body 36 of an associated trolley 18 by axles 40 and bearings 42, and ride on the lowermost flange 34 of the rail 16 so as to allow the pair of trolleys 18 to ride along the rail 16.

The pair of trolleys 18 comprise a mounting plate 44. The mounting plate 44 of the pair of trolleys 18 fixedly attaches the generally U-shaped body 36 of each trolley 18 to each other in a spaced relationship and in identical orientation to each other so as to allow the pair of trolleys 18 to operate as a single unit.

One trolley 18 has an electric motor 45. The electric motor 45 of the one trolley 18 is for electrically connecting to the power source 24 so as to cause the two sets of wheels 38 of the one trolley 18 to rotate and thereby allow the pair of trolleys 18 to traverse the rail 16 in either direction so as to be able to reach the electric vehicles 12 parked in the pair of adjacent rows of side-by-side parking spaces 14.

It is to be understood, however, that the electric motor 45 of the one trolley 18 can be eliminated and the pair of trolleys 18 can be pulled along the rail 16 manually.

E. Specific Configuration of the Single EV Battery Charger 20.

The single EV battery charger 20 comprises a housing 46. The housing 46 of the single EV battery charger 20 is dependingly attached to the mounting plate 44 of, so as to move with, the pair of trolleys 18.

The single EV battery charger 20 further comprises a retractable charger cable 48. The retractable charger cable 48 of the single EV battery charger 20 selectively extends from, and retracts into, the housing 46 of the single EV battery charger 20, terminates in a EV charger handle 50 (FIG. 3), and can be used to manually pull the pair of trolleys 18 along the rail 16 when the electric motor 45 of the one trolley 18 is eliminated.

The EV charger handle 50 of the single EV battery charger 20 is for electrically connecting to the electric vehicles 12 parked in the pair of adjacent rows of side-by-side parking spaces 14.

F. Specific Configuration of a Collector Shoe Embodiment of the Apparatus 22.

The specific configuration of a collector shoe embodiment of the apparatus 22 can best be seen in FIG. 4, which is again an enlarged diagrammatic perspective view taken generally in the direction of ARROW 4 in FIG. 2 of the overhead mobile charger system of the embodiments of the present invention utilizing a collector shoe, and as such, will be discussed with reference thereto.

The apparatus 22 comprises a plurality of conductors 52. The plurality of conductors 52 of the apparatus 22 are rigid, uninsulated and thereby exposed, are parallel to each other, extend horizontally at one side of the web 32 of the rail 16 by insulated suspenders 54, and are for electrically connecting to the power source 24 so as to allow the plurality of conductors 52 of the apparatus 22 to be electrically hot and carry power from the power source 24.

The apparatus 22 further comprises a plurality of collector shoes 56. The plurality of collector shoes 56 of the apparatus 22 are electrically connected to the single EV battery charger 20 by a power cable 58, and slide freely along the plurality of conductors 52 of the apparatus 22 making electrical contact, therewith as they move therealong so as to allow the single EV battery charger 20 to slide along the rail 16, via the pair of trolleys 18, and remain electrically supported without impinging upon movement of the pair of trolleys 18 along the rail 16.

G. Specific Configuration of a Festoon Embodiment of the Apparatus 22.

The specific configuration of a festoon embodiment of the apparatus 22 can best be seen in FIG. 5, which is again an enlarged diagrammatic perspective view taken generally in the direction of ARROW 5 in FIG. 2 of the overhead mobile charger system of the embodiments of the present invention utilizing a festoon, and as such, will be discussed with reference thereto.

The apparatus 22 comprises a unistrut 60. The unistrut 60 of the apparatus 22 extends horizontally at one side of the web 32 of the rail 16, outboard of the lowermost flange 34 of the rail 16, by rigid suspenders 62.

The apparatus 22 further comprises a plurality of rolling reels 64. The plurality of rolling reels 64 of the apparatus 22 are rollingly mounted, and move along, the unistrut 60 of the apparatus 22, at one side of the single EV battery charger 20.

The apparatus 22 further comprises a power cable 66. The power cable 66 of the apparatus 22 is electrically connected at one end 68 thereof to the single EV battery charger 20, reeves drapingly through the plurality of rolling reels 64 of the apparatus 22 so as to form slack, and is for electrically connecting at the other end 70 thereof to the power source 24 so as to allow the single EV battery charger 20 to slide along the rail 16, via the pair of trolleys 18, and remain electrically supported without impinging upon movement of the pair of trolleys 18 along the rail 16.

The power cable 66 of the apparatus 22 is insulated and flat so as to reeve more easily through the plurality of rolling reels 64 of the apparatus 22.

H. Specific Configuration of the EV Charger Handle 50 of the Single EV Battery Charger 20.

The specific configuration of the EV charger handle 50 of the single EV battery charger 20 can best be seen in FIG. 6, which is an enlarged diagrammatic perspective view of the area generally enclosed by the dotted curve identified by ARROW 6 in FIG. 3 of an EV charger handle, and as such, will be discussed with reference thereto.

The EV charger handle 50 of the single EV battery charger 20 comprises a hand-fitting enclosure 72. The hand-fitting enclosure 72 of the EV charger handle 50 of the single EV battery charger 20 is rigid, ergonomic, and has a free distal end 74 for releasably engaging in the electric vehicles 12 parked in the pair of adjacent rows of side-by-side parking spaces 14 and a proximal end 76 electrically communicating with the retractable charger cable 48 of the single EV battery charger 20.

The EV charger handle 50 of the single EV battery charger 20 further comprises a pair of pushbuttons 78. The pair of pushbuttons 78 of the EV charger handle 50 of the single EV battery charger 20 are accessible via the hand-fitting enclosure 72 of the EV charger handle 50 of the single EV battery charger 20, and are in electrical communication with the electric motor 45 of the one trolley 18, via the retractable charger cable 48 of the single EV battery charger 20, and when one pushbutton 78 of the EV charger handle 50 of the single EV battery charger 20 is pressed, the pair of trolleys 18 traverse the rail 16 in one direction, and when the other pushbutton 78 of the EV charger handle 50 of the single EV battery charger 20 is pressed, the pair of trolleys 18 traverse the rail 16 in an opposite direction to, to thereby conveniently control movement of the single EV battery charger 20.

I. Impressions.

It will be understood that each of the elements described above or two or more together may also find a useful application in other types of constructions differing from the types described above.

While the embodiments of the present invention have been illustrated and described as embodied in an overhead mobile charger system for reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces, nevertheless, they are not limited to the details shown, since it will be understood that various omissions, modifications, substitutions, and changes in the forms and details of the embodiments of the present invention illustrated and their operation, can be made by those skilled in the art without departing in any way from the spirit of the embodiments of the present invention.

Without further analysis, the foregoing will so fully reveal the gist of the embodiments of the present invention that others can by applying current knowledge readily adapt them for various applications without omitting features that from the standpoint of prior art fairly constitute characteristics of the generic or specific aspects of the embodiments of the present invention. 

1. An overhead mobile charger system for reaching and charging electric vehicles parked in a pair of adjacent rows of side-by-side parking spaces, comprising: a) a rail; b) a pair of trolleys; c) a single EV battery charger; and d) means for electrically connecting said single EV battery charger to a power source without impinging upon movement of said pair of trolleys along said rail; wherein said rail is for mounting overhead of the pair of adjacent rows of side-by-side parking spaces; wherein said rail is for traversing the pair of adjacent rows of side-by-side parking spaces; wherein said pair of trolleys are movably mounted along said rail for reaching the electric vehicles parked in the pair of adjacent rows of side-by-side parking spaces; and wherein said single EV battery charger is mounted to, and moves with, said pair of trolleys for charging the electric vehicles parked in the pair of adjacent rows of side-by-side parking spaces.
 2. The system of claim 1, further comprising ceiling mounts; and wherein said ceiling mounts are for mounting said rail to a ceiling, overhead the pair of adjacent rows of side-by-side parking spaces.
 3. The system of claim 1, further comprising trolley stops; wherein said trolley stops are mounted to said rail; and wherein said trolley stops are for limiting traversing of said pair of trolleys on said rail to the pair of adjacent rows of side-by-side parking spaces.
 4. The system of claim 1, wherein said rail is an I-beam, and as such, has: a) a web; and b) a pair of flanges.
 5. The system of claim 4, wherein each trolley comprises a generally U-shaped body; and wherein said generally U-shaped body of each trolley depends from around a lowermost flange of said rail.
 6. The system of claim 5, wherein each trolley comprises two sets of wheels; wherein said two sets of wheels of each trolley are rotatably mounted to said generally U-shaped body of an associated trolley by axles and bearings; and wherein said two sets of wheels of each trolley ride on said lowermost flange of said rail so as to allow said pair of trolleys to ride along said rail.
 7. The system of claim 6, wherein said pair of trolleys comprise a mounting plate; wherein said mounting plate of said pair of trolleys fixedly attaches said generally U-shaped body of each trolley to each other in a spaced relationship and in identical orientation to each other so as to allow said pair of trolleys to operate as a single unit.
 8. The system of claim 7, wherein said single EV battery charger comprises a housing; and wherein said housing of said single EV battery charger is dependingly attached to said mounting plate of, so as to move with, said pair of trolleys.
 9. The system of claim 8, wherein said single EV battery charger comprises a retractable charger cable; wherein said retractable charger cable of said single EV battery charger selectively extends from, and retracts into, said housing of said single EV battery charger; wherein said retractable charger cable of said single EV battery charger terminates in an EV charger handle; and wherein said EV charger handle of said single EV battery charger is for electrically connecting to the electric vehicles parked in the pair of adjacent rows of side-by-side parking spaces.
 10. The system of claim 4, wherein said means includes a plurality of conductors; wherein said plurality of conductors of said means are rigid; wherein said plurality of conductors of said means are uninsulated and thereby exposed; wherein said plurality of conductors of said means are parallel to each other; wherein said plurality of conductors of said means extend horizontally at one side of said web of said rail by insulated suspenders; and wherein said plurality of conductors of said means are for electrically connecting to the power source so as to allow said plurality of conductors of said means to be electrically hot and carry power from the power source.
 11. The system of claim 10, wherein said means includes a plurality of collector shoes; wherein said plurality of collector shoes of said means are electrically connected to said single EV battery charger by a cable; wherein said plurality of collector shoes of said means slide freely along said plurality of conductors of said means making electrical contact therewith as they move therealong so as to allow said single EV battery charger to slide along said rail, via said pair of trolleys, and remain electrically supported without impinging upon movement of said pair of trolleys along said rail.
 12. The system of claim 5, wherein said means includes a unistrut; and wherein said unistrut of said means extends horizontally at one side of said web of said rail, outboard of said lowermost flange of said rail, by rigid suspenders.
 13. The system of claim 12, wherein said means includes a plurality of rolling reels; and wherein said plurality of rolling reels of said means are rollingly mounted to, and move along, said unistrut of said means, at one side of said single EV battery charger.
 14. The system of claim 13, wherein said means includes a power cable; and wherein said power cable of said means is electrically connected at one end thereof to said single EV battery charger, reeves drapingly through said plurality of rolling reels of said means so as to form slack, and is for electrically connecting at the other end thereof to the power source so as to allow said single EV battery charger to slide along said rail, via said pair of trolleys, and remain electrically supported without impinging upon movement of said pair of trolleys along said rail.
 15. The system of claim 14, wherein said power cable of said means is insulated; and wherein said power cable of said means is flat so as to reeve more easily through said plurality of rolling reels of said means.
 16. The system of claim 9, wherein one trolley has an electric motor; and wherein said electric motor of said one trolley is for electrically connecting to the power source so as to cause said two sets of wheels of said one trolley to rotate and thereby allow said pair of trolleys to traverse said rail in either direction so as to be able to reach the electric vehicles parked in the pair of adjacent rows of side-by-side parking spaces.
 17. The system of claim 16, wherein said EV charger handle of said single EV battery charger comprises a hand-fitting enclosure; wherein said hand-fitting enclosure of said EV charger handle of said single EV battery charger is rigid; wherein said hand-fitting enclosure of said EV charger handle of said single EV battery charger is ergonomic; wherein said hand-fitting enclosure of said EV charger handle of said single EV battery charger has a free distal end for releasably engaging in the electric vehicles parked in the pair of adjacent rows of side-by-side parking spaces; and wherein said hand-fitting enclosure of said EV charger handle of said single EV battery charger has a proximal end electrically communicating with said retractable charger cable of said single EV battery charger.
 18. The system of claim 17, wherein said EV charger handle of said single EV battery charger comprises a pair of pushbuttons; wherein said pair of pushbuttons of said EV charger handle of said single EV battery charger are accessible via said hand-fitting enclosure of said EV charger handle of said single EV battery charger; wherein said pair of pushbuttons of said EV charger handle of said single EV battery charger are in electrical communication with said electric motor of said one trolley, via said retractable charger cable of said single EV battery charger, and when one pushbutton of said EV charger handle of said single EV battery charger is pressed, said pair of trolleys traverse said rail in one direction, and when the other pushbutton of said EV charger handle of said single EV battery charger is pressed, said pair of trolleys traverse said rail in an opposite direction to, to thereby conveniently control movement of said single EV battery charger. 